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CSG Reshape Technology
Overview

The casing reshape technology independently developed by our company is a new and efficient casing shaping technology. Its tools consist of pressurization system, anchoring device, hydraulic cylinder, expanding tube, and rolling balls. When it works, the surface pump provides hydraulic power, and after pressurization, a fulcrum is established inside casing; at the same time, the reshaping balls crush the deformed section of the casing repeatedly. In this way, the deformed section of casing is restored.

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1.There is no impact on the strength of casing;

2.There is no impact on the geometric shape of casing. The casing can restore its inherent roundness;

3.Apply to most casing deformations; the minimum operating channel is 40mm;

4.Short performance time, which can reduce downtime;

5.The reshaping ability is strong, and the requirements for equipment configuration is low;

6.This technology can be applied to horizontal wells.
The casing reshape technology is an innovative technology successfully developed by our company in 2007. Through continuous improvement, the technology has gradually become mature and stable. After years of practice, our company has formed a complete management system in tools manufacturing, and established enterprise standards. At present, the company has 70 employees, including 45 technical service engineers; 15 technical service teams. A modern production workshop has been established in Hualong District, Puyang City, achieving independent production of all reshaping tools.
Since the success of the first well in 2007, 830 wells have been reshaped in more than ten Chinese oilfields, such as Shengli, Zhongyuan, etc.. Due to its simple implementation and convenient operation, the overall success rate of casing reshape technology remains above 83%; and the success rate is over 95% in latest three years.

In 2020, the company launched a special research project aiming at the characteristics of large casing wall thickness and super high pipe strength in Sichuan shale gas wells. In October, the research results were reported and recognized by oilfield experts.
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